spac·​er | \ ˈspā-sər How to pronounce spacer (audio) \
plural spacers

Definition of spacer

: a device or piece used to create or maintain a desired amount of space (as between two parts) As long as your joints look even, it's more important that you avoid a large grout line at the last tile than worry about sticking to the exact measurement of the spacer.— Jennifer Stimpson Stiff spacers of low-expansion materials … may be used to provide a fixed spacing between the end mirrors.— Arthur L. Schawlow Use wood shims or spacers where necessary to compensate for wavy ceilings and to make certain the bottom surfaces of all strips are flush.— Bernard Gladstone

Examples of spacer in a Sentence

Recent Examples on the Web The double-stack magazine has a spacer that protects each column of rounds and sits flush with the stock for easy one-handed carry. John B. Snow, Outdoor Life, "The Gun Test: 24 Best New Rifles and Shotguns of the Year," 14 Sep. 2020 Screw a ½-inch plywood spacer to the back of the top shelf to keep the shelves from touching the wall. Joseph Truini, Popular Mechanics, "A Fashionable Lean: How To Build a Ladder Shelf," 22 Aug. 2020 For most of the night, the 26th pick in the 2019 draft -- carrying a reputation as a marksman and floor spacer -- was leading the Cavs in assists. Chris Fedor, cleveland, "Dylan Windler, Cleveland Cavaliers’ forgotten man, ready for his reintroduction," 23 Dec. 2020 After nailing each slat to its top rail, move the spacer down to the bottom rail [11] and nail it in place. Merle Henkenius, Popular Mechanics, "How To Make Your Own Picket Fence," 23 Oct. 2020 With Thompson out for the season with a torn right Achilles tendon, Mulder realizes that Golden State could use another floor-spacer. Connor Letourneau,, "Warriors’ Mychal Mulder knows the path he likely must follow to reach the NBA," 13 Dec. 2020 Ibaka, who signed a two-year free-agent deal for $19 million with the Clippers, gives them a floor spacer with his ability to make three-pointers. Los Angeles Times, "Clippers rest Marcus Morris for exhibition with Lakers because of knee soreness," 11 Dec. 2020 Infusing the wiry floor-spacer – Smart gave Jones the greenest of lights – into long and athletic lineup should create better spacing and open up wider lanes for the team’s assortment of guards and slashers. Nick Moyle,, "No. 19 Texas readies for relocated Maui Invitational," 29 Nov. 2020 But the best-case scenario has Jessup following a similar trajectory as Robinson, making the NBA roster and becoming a productive floor-spacer. Connor Letourneau,, "Warriors draft pick Justinian Jessup hopes to become next Duncan Robinson," 20 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'spacer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of spacer

1857, in the meaning defined above

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Last Updated

2 Feb 2021

Cite this Entry

“Spacer.” Dictionary, Merriam-Webster, Accessed 28 Feb. 2021.

Style: MLA
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More Definitions for spacer


spac·​er | \ ˈspā-sər How to pronounce spacer (audio) \

Medical Definition of spacer

: a region of chromosomal DNA between genes that is not transcribed into messenger RNA and is of uncertain function

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